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Ethanol adaptation in foodborne bacterial pathogens

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Pages 777-787 | Published online: 10 Apr 2020
 

Abstract

Foodborne pathogens possess the ability to develop adaptive responses to sublethal environmental stresses, leading to increased tolerance to homologous or heterologous stressing agents commonly applied during food manufacturing. This phenomenon may counteract the effectiveness of current intervention strategies to ensure food safety, thus increasing consumer risk. Foodborne pathogens encounter ethanol, a common food component and a widely used food processing agent, in a variety of niches during their life cycles. The present contribution provides an overview of the influence of adaptation to sublethal doses of ethanol on the stress tolerance of major foodborne pathogens (e.g. Salmonella enterica, Vibrio parahaemolyticus, Listeria monocytogenes, Bacillus cereus, and Cronobacter sakazakii). Fundamental studies on ethanol adaptation mechanisms with a focus on cell membrane properties, gene expression patterns, protein profiles, and mutagenic analyses are discussed. Furthermore, knowledge gaps on effective mitigation of ethanol adaptation in foodborne pathogens are identified and addressed.

Disclosure statement

The authors declare that there are no conflicts of interest.

Additional information

Funding

This work was supported by the grants from National Key R&D Program of China (No. 2017YFC1600100), China Postdoctoral Science Foundation (No. 2019M661516) and National Sciences and Engineering Research Council of Canada (NSERC Discovery Grant RGPIN-2015-04871). Mr. Shoukui He was supported by a scholarship (File No. 201706230177) provided by China Scholarship Council during his study at The University of British Columbia.

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